EST是美国东部标准时间Eastern Standard Time的缩写。

东部标准时间=Eastern Standard Time （美国）东部标准时间。

格林尼治时间是以地球自转为基础的时标，后来人们发现地球的自转有逐渐变慢的趋势，并有季节性的变化和突然的不规则变化。

相关介绍

All times given in these instructions are in terms of Eastern Standard time (EST). (COMAP is located in the U. S. Eastern time zone.)

本说明书中的所有时间均指美国东部标准时间。(COMAP位于美国东部时区。)

All times given in these instructions are in terms of Eastern Standard time (EST). (COMAP is located in the U. S. Eastern time zone.)

本指南所涉及时间全部为美国东部标准时间(est)，因为COMAP位于美国东部时区。

It becomes exact at 3:02 a. m. on Saturday the 6th, though (Eastern Standard Time), so you and your date will either have to stay up late to get the maximum romantic punch or fudge things a little.

精确时间是6号周六3：02AM（东部时间），所以，你和你的约会对象既可以熬夜狂欢，也可以只来点小甜蜜。

There sits Newfoundland, which has its own time zone (NST: Newfoundland Standard Time), three and a half hours behind Greenwich Mean Time and half an hour ahead of eastern mainland Canada.

那就是纽芬兰，有自己的时区（纽芬兰标准时间），比格林尼治标准时间晚三个半小时，比加拿大东部大陆标准时间早半小时。